This study presents the results of anumerical simulation of 21 high-strength concrete (HSC) columns to study the effect of steel fiber content on the behavior and strength of HSC columns. A finite element simulation was done by ABAQUS/CAE program. The columns’ specimens were subjected to concentric and eccentric loads. The selected eccentric load was applied at a distance 80 mm and 250 mm away from the centroid of the circular columns. Different steel fiber content was considered as 0%, 0.75%, 1.5%, and 2%. The columns are divided into three groups: the first group of the columns was without any steel fiber neither in their cover nor their core (non-fibered columns), the second group consisted of columns with the concrete core without steel fiber and the concrete cover with steel fiber (partially-fibered columns), and the last group of the columns was with steel fiber in whole section (fully-fibered columns). The test study showed that adding steel fibers in different proportions to the concrete columns leads to a significant increase in the bearing capacity of the columns compared to columns without steel fibers. It was also found that concrete columns with 2% steel fibers content showed minimal cover spalling and higher final strength than the rest of the columns.The addition of steel fibers had a significant effect on the maximum load that the specimens could withstand under eccentricity loads.

columns, high-strength concrete; ABAQUS; steel fiber; ductility; eccentric.